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Selected Quarterly Financial Information (Unaudited) (Tables)
 12 Months Ended
Dec. 29, 2012
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
Quarterly Periods During Fiscal Year Ended December 29, 2012:
 
 
Three months ended March 31, 2012
 
Three months ended June 30, 2012
 
Three months ended September 29, 2012
 
Three months ended December 29, 2012
 
(In thousands, except per share data)
Revenue
$
10,866

 
$
7,012

 
$
8,190

 
$
8,574

Gross profit (2)
$
3,253

 
$
1,127

 
$
2,451

 
$
2,425

(Loss) income from continuing operations
$
(2,712
)
 
$
(6,456
)
 
$
(6,849
)
 
$
(5,766
)
Net loss attributable to the controlling interest
$
(2,578
)
 
$
(5,199
)
 
$
(6,724
)
 
$
(3,861
)
Net loss per share from continuing operations (1):
 
 
 
 
 
 
 
Basic
$
(0.04
)
 
$
(0.08
)
 
$
(0.11
)
 
$
(0.06
)
Diluted
$
(0.04
)
 
$
(0.08
)
 
$
(0.11
)
 
$
(0.06
)
Shares used in computing net loss per share from continuing operations:
 
 
 
 
 
 
 
Basic
64,225

 
63,078

 
63,415

 
63,836

Diluted
64,225

 
63,078

 
63,415

 
63,836

 
(1)
Net loss per share is computed independently for each of the quarters presented; accordingly, the sum of the quarterly net income per share may not equal the total computed for the year.
(2)
Gross profit is defined as net product revenue less cost of product revenues.
 
Quarterly Periods During Fiscal Year Ended December 31, 2011:
 
 
Three months ended March 31, 2011 as restated
 
Three months ended June 25, 2011
 
Three months ended September 24, 2011
 
Three months ended December 31, 2011 (3)
 
(In thousands, except per share data)
Revenue
$
17,374

 
$
15,424

 
$
14,063

 
$
17,798

Gross profit (2)
$
6,211

 
$
5,957

 
$
5,024

 
$
7,714

Loss from continuing operations
$
(523
)
 
$
(622
)
 
$
(541
)
 
$
(4,342
)
Net income attributable to the controlling interest
$
2,066

 
$
802

 
$
160

 
$
52

Net income per share (1):
 
 
 
 
 
 
 
Basic
$
0.03

 
$
0.01

 
$
—

 
$
—

Diluted
$
0.03

 
$
0.01

 
$
—

 
$
—

Shares used in computing net income per share:
 
 
 
 
 
 
 
Basic
64,736

 
64,529

 
64,292

 
64,065

Diluted
65,655

 
66,775

 
65,441

 
64,065

 
(1)
Net income per share is computed independently for each of the quarters presented; accordingly, the sum of the quarterly net income per share may not equal the total computed for the year.
(2)
Gross profit is defined as net product revenue less cost of product revenues.
(3)
Includes ($0.1) million impact in gross profit and net income attributable to the controlling interest for the three month period ended December 31, 2011, relating to the immaterial restatement as described in Note 1.